Flux trapped superconductor sychronous motor with creep compensa

Details Flux trapped superconductor sychronous motor with creep compensa Flux trapped superconductor sychronous motor with creep compensa

1991-04-04

1992-08-11

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310261, 310268, H02K 3700

Patent

active

051382075

ABSTRACT:
A superconductor motor (10) comprises a stator assembly (14) which includes a plurality of solenoids (40-44). A rotor assembly (12) includes a disk (20) of superconductive material in which are entrapped magnetic lines of flux which cause the rotor to function as a magnet. The lines of flux tend to creep throughout the disk over time thereby reducing the magnetic properties of the rotor assembly and decreasing motor performance. A plurality of coils (48a-48l) are carried by the disk. The stator solenoids are energized to produce rotation of the rotor, and the coils are energized in a predetermined manner to compensate for the flux creep in the disk and to restore the rotor assembly's magnetic properties thus to prevent deterioration in motor performance.

REFERENCES:
patent: 3564307 (1971-02-01), Kawabe et al.
patent: 3673444 (1972-06-01), Kawabe et al.
patent: 4691133 (1987-09-01), Mongeau
patent: 4829205 (1989-05-01), Lindgren
patent: 4843270 (1989-06-01), Dijken

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